how to decrease Uy residuals?

immortality · March 19, 2013, 10:23

in Residuals I attached Uy are about 10 order bigger than others.
how can I reduce it?
my problem is unsteady and compressible in a long tube with 7cm length and 4mm height.
any help and advice?
thanks.

fumiya · March 20, 2013, 09:45

Is there a symmetryPlane boundary in your case?

Best regards,
Fumiya

immortality · March 20, 2013, 10:58

hi dear Fumiya
No.there isn't any symmetryplane in my case.
Its a simple 2D tube with two walls at top and bottom and one inflow and one outflow at sides.

immortality · March 21, 2013, 12:21

any advice?

immortality · March 24, 2013, 05:27

suggestions and experiences are appreciated

immortality · March 29, 2013, 01:08

any help,advice,hint or only opinion?!

immortality · April 1, 2013, 03:23

does mesh resolution must have effect on residuals of U? I didn't received an effect.why?

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March 20, 2013, 09:45		#2
fumiya Senior Member Fumiya Nozaki Join Date: Jun 2010 Location: Yokohama, Japan Posts: 266 Blog Entries: 1 Rep Power: 18	Is there a symmetryPlane boundary in your case? Best regards, Fumiya

March 20, 2013, 10:58		#3
immortality Senior Member Ehsan Join Date: Oct 2012 Location: Iran Posts: 2,208 Rep Power: 26	hi dear Fumiya No.there isn't any symmetryplane in my case. Its a simple 2D tube with two walls at top and bottom and one inflow and one outflow at sides.

March 21, 2013, 12:21		#4
immortality Senior Member Ehsan Join Date: Oct 2012 Location: Iran Posts: 2,208 Rep Power: 26	any advice?

March 24, 2013, 05:27		#5
immortality Senior Member Ehsan Join Date: Oct 2012 Location: Iran Posts: 2,208 Rep Power: 26	suggestions and experiences are appreciated

March 29, 2013, 01:08		#6
immortality Senior Member Ehsan Join Date: Oct 2012 Location: Iran Posts: 2,208 Rep Power: 26	any help,advice,hint or only opinion?!

April 1, 2013, 03:23		#7
immortality Senior Member Ehsan Join Date: Oct 2012 Location: Iran Posts: 2,208 Rep Power: 26	does mesh resolution must have effect on residuals of U? I didn't received an effect.why?